3500 RPM limit issue

TedB370z · 04-20-2014, 11:57 AM

I replaced the crankshaft position sensor... and last night it happened again... shut off the car, turned it back on, still wouldn't rev past 3500rpm, even in park or neutral.. I plugged in my Bluetooth obd2 scanner, no codes, and no CEL.... turned off yet again, then it was fine.

BUT... noticed my oil temp gauge, sometimes reads the lowest number on the gauge, even after driving for 10 minutes, then sometimes reads normal... and it does the back and forth when you turn on the car so I know its not the gauge, and I read in other threads apparently if the oil temp reads goofy (or high) it can cause this limp mode without a CEL or code... I checked the oil today, and its not low.

150 Lubricating System :: Engine Mechanical :: Genuine Nissan Parts :: 370Z Parts (Z34) 2009-2013 :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com

so it's the 370Z SENSOR ASSY OIL TEMP 22630D?

any other ideas?

juld0zer · 07-26-2014, 05:47 PM

do you have a multimeter handy? or would you be near a radio shack etc to get a cheapie?

there is some resistance checks you can do on the crank and cam sensors.

Jordo! · 07-26-2014, 06:00 PM

Quote:

Originally Posted by TedB370z

I replaced the crankshaft position sensor... and last night it happened again... shut off the car, turned it back on, still wouldn't rev past 3500rpm, even in park or neutral.. I plugged in my Bluetooth obd2 scanner, no codes, and no CEL.... turned off yet again, then it was fine.

BUT... noticed my oil temp gauge, sometimes reads the lowest number on the gauge, even after driving for 10 minutes, then sometimes reads normal... and it does the back and forth when you turn on the car so I know its not the gauge, and I read in other threads apparently if the oil temp reads goofy (or high) it can cause this limp mode without a CEL or code... I checked the oil today, and its not low.

150 Lubricating System :: Engine Mechanical :: Genuine Nissan Parts :: 370Z Parts (Z34) 2009-2013 :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com

so it's the 370Z SENSOR ASSY OIL TEMP 22630D?

any other ideas?

Sounds like a blown relay somewhere... might be worth checking the fuses.

Another thought that comes to mind is the brake switch sensor may be stuck on. That's what keeps you from going WOT while brake is depressed.

juld0zer · 07-26-2014, 07:32 PM

AK370Z had the same problem which was cured by replacing the 2 cam sensors and 1 crank sensor.

brake switch(es) fault would result in extremely lethargic behaviour from a standstill and it would take forever to reach redline

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04-20-2014, 11:57 AM	#1 (permalink)
TedB370z Base Member Join Date: Aug 2013 Location: Pittsburgh, PA Posts: 87 Drives: 09 Nissan 370z Rep Power: 12	I replaced the crankshaft position sensor... and last night it happened again... shut off the car, turned it back on, still wouldn't rev past 3500rpm, even in park or neutral.. I plugged in my Bluetooth obd2 scanner, no codes, and no CEL.... turned off yet again, then it was fine. BUT... noticed my oil temp gauge, sometimes reads the lowest number on the gauge, even after driving for 10 minutes, then sometimes reads normal... and it does the back and forth when you turn on the car so I know its not the gauge, and I read in other threads apparently if the oil temp reads goofy (or high) it can cause this limp mode without a CEL or code... I checked the oil today, and its not low. 150 Lubricating System :: Engine Mechanical :: Genuine Nissan Parts :: 370Z Parts (Z34) 2009-2013 :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com so it's the 370Z SENSOR ASSY OIL TEMP 22630D? any other ideas?

07-26-2014, 05:47 PM	#2 (permalink)
juld0zer Enthusiast Member Join Date: Nov 2012 Location: Sydney Posts: 428 Drives: 11 Nissan 370Z MB M6 Rep Power: 139	do you have a multimeter handy? or would you be near a radio shack etc to get a cheapie? there is some resistance checks you can do on the crank and cam sensors.

07-26-2014, 07:32 PM	#4 (permalink)
juld0zer Enthusiast Member Join Date: Nov 2012 Location: Sydney Posts: 428 Drives: 11 Nissan 370Z MB M6 Rep Power: 139	AK370Z had the same problem which was cured by replacing the 2 cam sensors and 1 crank sensor. brake switch(es) fault would result in extremely lethargic behaviour from a standstill and it would take forever to reach redline